Reference Manual

Restart and Recovery
CMRU Central Main Replaceable Unit
An RBS has one CMRU.
DMRU Distributed Main Replaceable Unit
A Main RU is distributed if it is
subordinated to the CMRU.
41.3 Function
41.3.1 Purpose
The entire RBS is brought into operation in a controlled manner. The
sequence of events is given below.
41.3.2 Description
The sequence of actions initiated is summarized below:
1
start CMRU-processor
2
start DMRU-processor
3
start Sub RU-processor (if any)
4
start CMRU basic functions
5 start DMRU basic functions
6
start Sub RU basic functions
7
conditional RBS DB(Data base)load
8
read parameters for OM bus
9 define OM address
10 link establish functions for Sub RUs connected to DMRU
11 link establish functions for Sub RUs connected to CMRU
12
update RBS database for Sub RUs connected to CMRU
13
link establish functions for all expected DMRUs
14
update RBS database for all expected DMRUs
15 update RBS database for Sub RUs connected to DMRU
16 wait for expected Passive RUs
17 internal configuration
18 check RBS operational ability
19 set fault indicator on all DMRUs with faults
20 set operation indicator on all DMRUs with no faults
21 set fault indicator on all Sub RUs with faults
22 set fault indicator on all DMRUs with faults
23 bring CMRU into remote operation
332 (485)
EN/LZT 720 0008 P2A
2001-11-28
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